24729925domain: NAppears in sequencesNumerators of second column of the inverse of the triangle of polynomial coefficients P(0,x)=1, 2P(n,x)=(1+x)*[(1+x)^(n-1)+x^(n-1)].at n=18A141424Autosequence preceding A198631(n)/A006519(n+1). Numerators.at n=19A233808Autosequence preceding A198631(n)/A006519(n+1). Numerators.at n=20A233808